The present invention provides a jet aeration apparatus, which comprises a water inlet pipe (1) and a mixing chamber (2), wherein the right end of the water inlet pipe (1) extends into the mixing chamber (2), the upper portion of the mixing chamber (2) is provided with a gas inlet pipe (3), the right end of the mixing chamber (2) is communicated to a water draining pipeline (12) through a venturi pipeline, the venturi pipeline comprises a constriction part (4), a throat part (5) and a diffusion part (6), the gas inlet pipe (3) is divided into a left gas inlet pipe (7) and a right gas inlet pipe (8) through a separation plate (13), the right gas inlet pipe (8) extends into the right end of the throat part (5) through a gas conveying pipeline (14), and the gas conveying pipeline (14) is arranged along the venturi pipeline upper portion inner wall. The jet aeration apparatus of the present invention has the good aeration effect, and can be conveniently and externally connected to the high pressure gas source.